From patchwork Thu Feb 6 10:42:04 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Naohiro Aota X-Patchwork-Id: 11368091 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 7AD91924 for ; Thu, 6 Feb 2020 10:44:39 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 4F75820730 for ; Thu, 6 Feb 2020 10:44:39 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=wdc.com header.i=@wdc.com header.b="TXOdlQAI" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728579AbgBFKoi (ORCPT ); Thu, 6 Feb 2020 05:44:38 -0500 Received: from esa1.hgst.iphmx.com ([68.232.141.245]:50006 "EHLO esa1.hgst.iphmx.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728556AbgBFKoh (ORCPT ); Thu, 6 Feb 2020 05:44:37 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=wdc.com; i=@wdc.com; q=dns/txt; s=dkim.wdc.com; t=1580985876; x=1612521876; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=0mLMyvXISJkKtaveQS6Ke3dOGw0YjpT7RmJIVuVCL8Q=; b=TXOdlQAIIXqlQ4UQfnNWlXqi8uBdZzz5+NObCwC1+tq36JSHg3k5R21T ffIo5iYQTeRjWM+DBtmWw9R3RMWbxlecJUiUJYdWLAl/bdFGjsXFbIlEy kDfPE9hawLlsPDGSFajwETbgMPF120Dvmh7DS5hR6I1GX2a3CKz92GRoG GDYxf8NaNNs7c1SOr6Qfr3TZGi33NUQQnWNsOnOR2lApvj2fkLdhEUkyP mVw6GUWUPy8Zc60tivHWElgEtO6ddAT10rITlJ2cCbsi7Gkq/kjfY4uBD 2c1jVMxlVtovjSb+qoEs/HBcwJ1H0qS6+SC2X9HqlOk4gzHvBZq1QjPxW A==; IronPort-SDR: 3AI19ja2s/0SFD+/mNrf/5bWOpaqB3Tx2W6tAxMzMdP3Xn3e+CEulUm2Kz7XMqWJzLVpb7qrws p+qCSOsj8nnfwXdYTT8uljHiVsUTyRMRPL8KBBNJCT/f5IOJMZeUVWB8UJTRAYqdrywDfawLT5 mkSxIhRZJSzAEmfJUiq15Y4WwNQvz5MV/wxvwhV8VaKBd4SNbguTXy3mBNaXwaOBxN7SsKnezD 8yAFPUznn7GJtj0kNHqUejb+2Pn8bC4W7FZxPBgydXZ6XLTo4cchhOHuruwehPPaQQBbgYEfVM Iro= X-IronPort-AV: E=Sophos;i="5.70,409,1574092800"; d="scan'208";a="237209529" Received: from h199-255-45-14.hgst.com (HELO uls-op-cesaep01.wdc.com) ([199.255.45.14]) by ob1.hgst.iphmx.com with ESMTP; 06 Feb 2020 18:44:36 +0800 IronPort-SDR: IWc0jNE4+vfzfvManjmOq1weBy6gD4QgrlAhmXFl92p3M7I7pgdi9d6OPFTGd/5vysj7U9Jqca EmJBBS/z2rMVNZscSR1yQaYkiJ1TAiMZ1Z9y4fVqBVgDFcAhdsWXO0FT0KABsXW7zW/fphF2WA maoeBchn6lTOz8X+ezh9WQKBux6kbYz7sdyoURS0uYvUs/KecivpiK2m6UBtb3fvhdv/t3aY7c yiNMVv+p25QgdM0RiRV40vnM/i1gSsSGi6e7xX2xoawmhQvrzT4b2SqJXDwGeNcBD7I3atNnaa czXY6yRBTVCI/3pV8AF2v9HQ Received: from uls-op-cesaip02.wdc.com ([10.248.3.37]) by uls-op-cesaep01.wdc.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 06 Feb 2020 02:37:36 -0800 IronPort-SDR: RHVjB6SlHuAdz3hXbCGVQE54NnX5y7ZUxynWUtSHJByo9NKEkgnIXuSTbJ8Fp7V1kUxodADsMl aL6qJ3L2C8SPl3Usbgwh+xm/9TdBWKYlyySNeet5DEugG/IMrE6qCVIa0Qy2dvnFlmklvI+cCv 4brFPcuniS9m/staK+lAQayq9jHkUMJ6TLe2MZGwQctytU3/AYSidJcNiRvA46z9/htkbEWpFc m6rRCpIc92BY5wtzhU50GvQnHAZRGFLq2erxJDMxG2xniiSrFWdmCWrSAVVF+m1CsUgpvSk1Fz /6s= WDCIronportException: Internal Received: from naota.dhcp.fujisawa.hgst.com ([10.149.52.155]) by uls-op-cesaip02.wdc.com with ESMTP; 06 Feb 2020 02:44:34 -0800 From: Naohiro Aota To: linux-btrfs@vger.kernel.org, David Sterba Cc: Chris Mason , Josef Bacik , Nikolay Borisov , Damien Le Moal , Johannes Thumshirn , Hannes Reinecke , Anand Jain , linux-fsdevel@vger.kernel.org, Naohiro Aota Subject: [PATCH 10/20] btrfs: introduce extent allocation policy Date: Thu, 6 Feb 2020 19:42:04 +0900 Message-Id: <20200206104214.400857-11-naohiro.aota@wdc.com> X-Mailer: git-send-email 2.25.0 In-Reply-To: <20200206104214.400857-1-naohiro.aota@wdc.com> References: <20200206104214.400857-1-naohiro.aota@wdc.com> MIME-Version: 1.0 Sender: linux-btrfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org This commit introduces extent allocation policy for btrfs. This policy controls how btrfs allocate an extents from block groups. There is no functional change introduced with this commit. Signed-off-by: Naohiro Aota --- fs/btrfs/extent-tree.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c index 227d4d628b90..247d68eb4735 100644 --- a/fs/btrfs/extent-tree.c +++ b/fs/btrfs/extent-tree.c @@ -3438,6 +3438,10 @@ btrfs_release_block_group(struct btrfs_block_group *cache, btrfs_put_block_group(cache); } +enum btrfs_extent_allocation_policy { + BTRFS_EXTENT_ALLOC_CLUSTERED, +}; + /* * Structure used internally for find_free_extent() function. Wraps needed * parameters. @@ -3489,6 +3493,9 @@ struct find_free_extent_ctl { /* Found result */ u64 found_offset; + + /* Allocation policy */ + enum btrfs_extent_allocation_policy policy; }; @@ -3826,6 +3833,7 @@ static noinline int find_free_extent(struct btrfs_fs_info *fs_info, ffe_ctl.have_caching_bg = false; ffe_ctl.orig_have_caching_bg = false; ffe_ctl.found_offset = 0; + ffe_ctl.policy = BTRFS_EXTENT_ALLOC_CLUSTERED; ins->type = BTRFS_EXTENT_ITEM_KEY; ins->objectid = 0;